/*
 * Copyright (c) 2007, 2015, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package com.sun.org.apache.xml.internal.security.utils.resolver.implementations;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;

import com.sun.org.apache.xml.internal.security.signature.XMLSignatureInput;
import com.sun.org.apache.xml.internal.security.utils.resolver.ResourceResolverContext;
import com.sun.org.apache.xml.internal.security.utils.resolver.ResourceResolverSpi;

/**
 * @author $Author: coheigea $
 */
public class ResolverAnonymous extends ResourceResolverSpi {

  private InputStream inStream = null;

  @Override
  public boolean engineIsThreadSafe() {
    return true;
  }

  /**
   * @param filename
   * @throws FileNotFoundException
   * @throws IOException
   */
  public ResolverAnonymous(String filename) throws FileNotFoundException, IOException {
    inStream = new FileInputStream(filename);
  }

  /**
   * @param is
   */
  public ResolverAnonymous(InputStream is) {
    inStream = is;
  }

  /**
   * @inheritDoc
   */
  @Override
  public XMLSignatureInput engineResolveURI(ResourceResolverContext context) {
    return new XMLSignatureInput(inStream);
  }

  /**
   * @inheritDoc
   */
  @Override
  public boolean engineCanResolveURI(ResourceResolverContext context) {
    if (context.uriToResolve == null) {
      return true;
    }
    return false;
  }

  /**
   * @inheritDoc
   */
  public String[] engineGetPropertyKeys() {
    return new String[0];
  }
}
